pinwheeln.
英 'pɪnwiːl | 美 'pɪnwil
中文n. 纸风车；轮转焰火
词根词源
pinwheel (n.)also pin-wheel, 1690s, "a wheel in the striking train of a clock in which pins are fixed to lift the hammer," from pin (n.) + wheel (n.). Fireworks sense is from 1869.
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